Correlation of the rates of solvolysis of (arylmethyl)methylphenylsulfonium ions †
作者:Dennis N. Kevill、Norsaadah HJ Ismail
DOI:10.1039/a803859g
日期:——
The specific rates of solvolysis of the benzylmethylphenylsulfonium ion (prepared as the trifluoromethanesulfonate salt) and five benzylic ring-substituted derivatives can be satisfactorily correlated using NT solvent nucleophilicity values. Addition of a secondary term, governed by the aromatic ring parameter (I), shows the sensitivities towards changes in this parameter to fall and those towards
所述benzylmethylphenylsulfonium离子(如三氟甲磺酸盐盐制备)和5苄基环上取代的衍生物的溶剂分解的特定速率可以使用良好地相关Ñ Ť溶剂的亲核性值。加入第二术语的,由芳环的参数(约束我),示出了向在该参数中的变化的灵敏度下降,这些朝向变化Ñ Ť随取代基的吸电子能力上升。具有吸电子取代基的哈米特ρ值(基于σ +值)从95%丙酮中的–0.9到97%2,2,2-三氟乙醇中的–1.8不等。将这些Grunwald-Winstein和Hammett分析与以前报道的,使用基本相同的溶剂和取代基进行的芳基甲基对甲苯磺酸盐溶剂化方法进行了比较。